I've had BB7 roads on 5 drop bar bikes. Never had any issues. I did have to properly set up three of them after purchase,but once I was done with them they worked perfectly. And yes,I've also owned several bikes with MTN BB7's to compare to.
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C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport,Dahon Speed Pro TT,Brompton S6L/S2E-X